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- Extra 4 used with "System 1";
T1
P1
3.3
COLLECTOR CHOICE.
"TubE" parameter (Default value "off ").
Once the parameter "TubE" selected, press on the
▶
navigation key right (
collector installed.
- Now select "on" if your installation uses a vacuum
pipes collector. (This Function could also be used
with flat collector when the sensor is mounted on the
external parts of the collector). This function works in
the following way. Each 30 minutes the pump will be
activated 40 seconds to measure the correct value on
the collector to avoid short charge cycle.
- Select "off " if your installation works with a flat collec-
tor in normal condition of uses.
3.4
MAXIMUM TEMPERATURE OF
COLLECTOR.
"ColM" parameter (Default value "120").
- Setting level to start the overheat protection for the
collector. (Adjustable 110 to 150°C with factory value
120°C).
3.5
OVERHEAT PROTECTION.
"OvrH" parameter (Default value "On").
This function will stop all collector circulations (P1
and P2) when the collector temperature increase above
"ColM" plus an offset value (+10°C default value, can be
changed). This function is used to protect the elements
of the installation (Pipe, fitting, ring rubber..)..
T2
+) to choose the type of the
- To activate the function, press (
- Now you will have the possibility to adjust the offset
level.
"Ovrt" parameter (Default value "20°C").
This offset is generally used to avoid a too quick reaction
of the overheat function (particularly interesting with the
vacuum pipes collector).
(Adjustable +10°C to +30°C with factory value +10°C).
N.B.: For safety reasons the overheat protection should
always be on ("on").
3.6
COOLING.
"Cool" parameter (Default value "On").
This option is used to protect the collector liquid and
works in the following way. It activates the solar pump
P1 or P2 if temperature on the collector arrays T1 or T4
exceeds the "Max temp" value even if the set maximum
temperature in the tank is exceeded. The circulation
stops when temperature has dropped 10°C. (The pum-
ps will be stopped if the water temperature in the tank
reaches 90°C).
"Rcoo" parameter (Default value "On").
When the water temperature inside the tank is above the
setting level "Maxtemp tank1" and the collector tempe-
rature is 10°C under the pump is activated to cool the
tank through the collector. The pump will be turned off
when the water temperature inside the tank is down to
the setting level "tkM1" or when the difference between
the tank and collector array temperature is below 2°C.
3.7
FREEZE PROTECTION.
"FrEZ" parameter (Default value "off ").
This option will keep the solar panel temperature T1 or
T4 above the Freeze setting level "Frzt" by activating
the pump P1 or P2.
31
▶
+) to select the "on".
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